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Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
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Decrease of cancer diagnosis during COVID-19 pandemic: a systematic review and meta-analysis.

Marco Angelini1, Federica Teglia1, Laura Astolfi1

  • 1Department of Medical and Surgical Sciences, University of Bologna, Via Massarenti 9, 40138, Bologna, Italy.

European Journal of Epidemiology
|January 2, 2023
PubMed
Summary
This summary is machine-generated.

The COVID-19 pandemic significantly reduced cancer diagnostic tests by 37.3% and cancer diagnoses by 27.0%. While diagnoses showed recovery by May 2020, delays may increase preventable cancer deaths.

Keywords:
COVID-19CancerCancer diagnosisDiagnostic testMeta-analysisPandemicReview

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Area of Science:

  • Oncology
  • Public Health
  • Epidemiology

Background:

  • The COVID-19 pandemic disrupted global health services, notably impacting cancer care pathways.
  • Understanding the pandemic's effect on cancer diagnostics is crucial for mitigating long-term consequences.

Approach:

  • A systematic review and meta-analysis synthesized data from 61 observational studies published between January 2020 and December 2021.
  • Data compared cancer diagnostic test and diagnosis rates during the pandemic versus pre-pandemic periods.

Key Points:

  • Global cancer diagnostic tests decreased by an average of 37.3% during the early pandemic.
  • Cancer diagnoses dropped by 27.0%, with a U-shaped recovery trend observed, nearing pre-pandemic levels by May 2020.
  • Significant variations in impact were noted across different geographic regions and study settings.

Conclusions:

  • The pandemic caused substantial reductions in cancer diagnostic procedures and diagnoses, particularly in the initial phase.
  • Delayed cancer diagnosis poses a risk of increased avoidable cancer mortality.
  • Further research is essential to evaluate the pandemic's effects on cancer treatment and survival rates.